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Re: BLACK SCREAN ON SANYO DP46819

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience.http://electronicshelponline.blogspot.com/ Pull up older posts there.

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Back-light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.http://electronicshelponline.blogspot.com/

I have the same tv and about 6 months after I bought it mine did the same thing. Its the motherboard. So I got it fixed and now it changes channels all by itself and jack the volume up randomly. I say junk it before you waste anymore money :(